Few questions relating to Orchidroid and Heart

I really wanted Orchidroid my self so although I knew the heart was not perm I still got it. *No regrets whatsoever*Just wondering if I can just purchase a perm heart and attach it to the android.
If its possible, what kinds of heart is available? Is it just Lidium or are there more options?Also, if I get a Lidium heart recipe and create it my self, would it expire or will it stay perm?
And last but not least, what is the difference between a Lidium heart with "(permanent)" and the one without it but still does not have time limit?

That's a lot of questions at once... sorry bout that
Thanks ahead for anyone who answers it!